Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
  • Effective date searches are available only for US area codes. Our sources for non-US NPA-NXX data do not provide this information.
  • If you want to search an entire area code regardless of activity, leave both the next and past days fields set to zero.

NPA: 603 [Rate centres in NPA 603] [Dial plan for NPA 603]

NXX:

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
603-998 A Laconia NH MNCHNHCNXAX  6664 SPRINT SPECTRUM L.P. 122      
603-998 0 Laconia NH   6386 BELL ATLANTIC NYNEX MOBILE 122   2008-05-02   
603-998 1 Laconia NH   6664 SPRINT SPECTRUM L.P. 122      
603-998 2 Laconia NH   6664 SPRINT SPECTRUM L.P. 122      
603-998 3 Laconia NH   6386 BELL ATLANTIC NYNEX MOBILE 122   2007-04-02   
603-998 4 Laconia NH   6386 BELL ATLANTIC NYNEX MOBILE 122   2007-06-01   
603-998 5 Laconia NH   6664 SPRINT SPECTRUM L.P. 122   2007-07-26   
603-998 6 Laconia NH   6386 BELL ATLANTIC NYNEX MOBILE 122   2009-03-07   
603-998 7 Laconia NH   6386 BELL ATLANTIC NYNEX MOBILE 122   2010-02-16   
603-998 8 Laconia NH   6664 SPRINT SPECTRUM L.P. 122   2006-05-18   
603-998 9 Laconia NH   6664 SPRINT SPECTRUM L.P. 122      

Last updated: Thu, 10 Sep 2020 02:15:24 UTC

Sponsored by: VoIP Much Phone Company

Like this site? We accept donations via PayPal.